CVS

Step 1)

In your home directory edit the file named .profile. After the
lines that define PATH and PS1, add two new lines that read:
CVSROOT=":ext:<username>@cobra.cs.virginia.edu:/home/robocup/cvsroot"
CVS_RSH="/usr/bin/ssh" where <username>is your CS account username.

Step 2)

Next, scroll down to the line that looks similar to export
PS1 PATH and set it to export CVSROOT and CVS_RSH. The
new text will look like the following.export PS1 PATH CVS_RSH CVSROOT